New Materials Startups

SIGMA supplies water and wastewater products including fittings, restraints, extended range products, municipal castings, fabrications, and custom parts for OEM manufacturers, serving customers across North America. The company also develops products such as coatings and linings and offers engineering and sourcing services for the water infrastructure market.

1 investor

Si-Lib develops pure silicon anodes for lithium-ion batteries, a materials technology aimed at energy-storage applications. The company originated from research at Tel Aviv University.

1 investor

SILVERbac is a patented antimicrobial textile technology that permanently incorporates pure silver particles into fibres, making the treatment non-leaching, non-toxic, and eco-friendly. Developed by Novel Technologies, it is aimed at the textile industry and marketed as a sustainable material innovation.

1 investor

SILVEX applies a conductive coating to textiles that provides electromagnetic field shielding while maintaining the fabric's original feel and appearance. The dip-and-dry process integrates into existing textile manufacturing workflows for consumer apparel, automotive, aerospace, military, and healthcare applications.

1 investor

Simplyfined develops a catalytic process to standardize renewable plant oils so they can replace petroleum in catalytic chemical reactions, enabling more sustainable chemical production. Its output serves manufacturers of consumer and industrial goods such as shampoos, mattresses, printer inks, lubricants, and surface coatings.

1 investor

Simreka provides an AI-driven R&D platform for chemicals, materials, and manufacturing companies, using virtual experimentation and simulation to accelerate product formulation and process discovery. The platform includes a domain-specific language model trained on chemical patents and technical literature, with deployment options for cloud or on-premise environments.

1 investor

Sindri Materials develops a scalable production process for ultra-high-quality monolayer graphene with low contamination and defects. Its initial application is graphene support grids for cryo-electron microscopy used in drug discovery, vaccine development, and disease research, with longer-term aims in electronics, energy storage, and structural materials.

1 investor

1 investor

Singular Solutions is a Canadian manufacturer of BioSustainable functional masterbatches and compostable compounds for flexible packaging, including patented additives for biodegradation of plastics and reduction of microplastics. Its products serve industries such as packaging, food, and agriculture.

1 investor

Zhejiang Sinopont Technology, founded in 2006, develops, manufactures, and sells encapsulant films for photovoltaic solar modules, including POE, EPE, white film, and EVA product lines with customization options. It serves the solar/new energy industry and operates production bases in central and eastern China, with additional domestic and overseas facilities in development.

1 investor

Sionic Energy develops a 100% silicon anode battery platform delivered as a licensable IP service, designed to drop into existing 21700, pouch, and prismatic cell manufacturing lines without new equipment. It targets OEMs in electrification markets including aviation, consumer electronics, e-mobility, automotive EVs, and grid storage, offering higher energy density (370 Wh/kg) and fast charging as an alternative to graphite anodes.

1 investor

SipNShut makes reclosable, spill-proof aluminum can lids that drop into existing high-speed canning lines, aimed at beverage brands across categories such as water, energy drinks, beer, seltzers, wine, and CBD/THC drinks. The product offers a fully recyclable alternative to plastic packaging with the reclosability of plastic lids.

1 investor

SisuSemi provides an atomic-level purification process (ALP) that cleans and orders semiconductor wafer surfaces to remove atomic-scale contaminants and defects, targeting advanced nodes at 3 nm and below. The technology, aimed at semiconductor manufacturers, reduces defect density and leakage current to improve chip performance and manufacturing yield, and integrates into existing production lines.

1 investor

SisuSemi provides atomic-level purification technology (ALP) that cleans and orders semiconductor wafer surfaces to remove atomic-level contaminants and defects, targeting advanced nodes at 3 nm and below. The technology integrates into chip manufacturing production lines to reduce defect density and leakage current while improving yield and chip performance, serving semiconductor manufacturers.

1 investor

Sixone recycles post-consumer polyester-blended textile waste into high-quality PET pellets, using AI and data-driven technology to selectively extract polyester from chemically complex blended fabrics. It supplies drop-in recycled polyester to apparel brands and textile manufacturers pursuing materials circularity goals.

1 investor

SJC Bio is a medical device company developing dental regenerative materials, including OsseoCem, a bone grafting material designed to set in situ for immediate mechanical stability and defined placement geometry while supporting natural bone regeneration. Its products target dental clinical procedures involving bone grafting.

1 investor

Company that produces complex ceramic components using a stereolithography (slurry-based) 3D printing process, in which ceramic powder is mixed with UV-curable resin, shaped layer by layer with a UV laser, then debinded and sintered. It targets applications such as electronic parts, medical devices, heat dissipation, aerospace, energy, and environmental components that are difficult to make with conventional methods.

1 investor

SKion Water is an international water technology platform that brings together and supports water technology companies addressing water treatment and access to clean water.

1 investor

Skouria produces copper using a deep brine in-situ recovery method that extracts copper from brine-rich porphyry deposits without blasting, tailings ponds, or open pits. The company adapts subsurface and geothermal stimulation techniques to make copper extraction faster, safer, and lower-impact for markets such as EVs, grid infrastructure, and AI data centers.

1 investor

Skyscrape develops temperature-responsive insulating fabrics that automatically expand and contract based on ambient temperature changes. The company works with apparel brands to integrate these fabrics into clothing that adapts between thick and thin insulation throughout the day and across varying conditions.

1 investor

Smart Tissues develops proprietary biomaterials for accelerating tissue regeneration and healing chronic wounds, with a focus on diabetic foot ulcers. Its technology combines regenerative and antibacterial properties for integration into advanced wound care products aimed at reducing infection and preventing amputations.

1 investor

Smarter Alloys develops shape memory alloy smart materials using its Multiple Memory Material technology, and provides materials engineering for products across medical devices, automotive/aerospace, and clean technology. Its applications include nitinol-based medical devices, automotive and aerospace actuators, and a heat engine that generates electricity from industrial low-grade waste heat.

1 investor

SmartNanotubes Technologies develops digital smell recognition technology that enables customers to create smell and gas detection applications. The company serves product developers and companies building odor and gas sensing solutions.

1 investor

SMB Kenzai is a building materials trading company (shozai) serving the residential living-space industry, operating as part of the Mitsui & Co., Sumitomo Corporation, and Marubeni group. It emphasizes environmental preservation and a circular economy.

1 investor